Prosecution Insights
Last updated: October 02, 2026

Examiner: ZHANG, TINA

Tech Center 3700 • Art Units: 1755 3785

This examiner grants 57% of resolved cases

Analysis

Tina Zhang is an examiner in Art Unit 1755 of Tech Center 3700. She has 97 resolved cases and an allowance rate of 56.7 percent. This 56.7 percent rate indicates a prosecution environment where success is achievable. The median days to allowance is 1280. This 1280-day figure is a metric for managing client expectations. Practitioners should factor this timeline into their overall strategy in Tech Center 3700.

The interview lift is 43.9 percent. This 43.9 percent lift indicates that interviews are an effective strategy for this examiner. This increase can improve the likelihood of obtaining a grant and should be a tool for practitioners. With 97 resolved cases, the 56.7 percent allowance rate is a metric for Art Unit 1755. The 43.9 percent lift indicates that the examiner is receptive to resolving issues through discussion. The 1280-day median is a specific point of reference for the duration of the prosecution phase.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

56.7%
Allow Rate
-13.3% vs TC avg
131
Total Applications
+43.9%
Interview Lift
1280
Avg Prosecution Days
Based on 97 resolved cases, 2023–2026

Rejection Statute Breakdown

4.7%
§101 Eligibility
10.6%
§102 Novelty
60.1%
§103 Obviousness
21.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18453742 METHODS AND APPARATUS FOR INCREASING BREATHING COMFORT DURING RESPIRATORY THERAPY Non-Final OA ResMed Pty Ltd
18677948 SYSTEM AND METHOD FOR CONTROLLING A SLEEP DISORDERED BREATHING THERAPY DEVICE Non-Final OA KONINKLIJKE PHILIPS N.V.
18534945 DETECTING, IDENTIFYING AND ALLEVIATING CAUSES FOR PRESSURE BURDEN USING POSITIVE AIRWAY PRESSURE DEVICES Non-Final OA KONINKLIJKE PHILIPS N.V.
17857484 ULTRASOUND-CONTROLLED TRAINING PROGRAM FOR INDIVIDUALIZED AND AUTOMATIC WEANING Non-Final OA Koninklijke Philips N.V.
17656936 CLOSED LOOP CONTROL IN MECHANICAL VENTILATION Non-Final OA ZOLL Medical Corporation
18532532 CANNULA Non-Final OA NIHON KOHDEN CORPORATION
18062437 INHALER DEVICE, DISPLAY DEVICE, DISPLAY METHOD, AND PROGRAM Non-Final OA Japan Tobacco Inc.
18109510 SYSTEMS AND METHODS FOR DELIVERY OF THERAPEUTIC GAS Final Rejection Mallinckrodt Pharmaceuticals Ireland Limited
17055365 METHOD AND APPARATUS FOR PULSATILE DELIVERY OF NITRIC OXIDE Final Rejection Mallinckrodt Pharmaceuticals Ireland Limited
18632568 VENTILATION ARRANGEMENT AND VENTILATION PROCESS WITH A COMPENSATION OF VIBRATIONS IN A VALVE Non-Final OA Drägerwerk AG & Co. KGaA
18007516 FEEDBACK PROVIDING FACIAL MASKS Non-Final OA University of Cincinnati
18752318 PATIENT INTERFACE Non-Final OA Fisher & Paykel Healthcare Limited
18535444 HEADGEAR WITH LOCK DISENGAGEMENT MECHANISM Non-Final OA Fisher & Paykel Healthcare Limited
18290534 POWDER INHALATION DEVICE AND CONTROL METHOD THEREOF Non-Final OA KT&G CORPORATION

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